package com.joiant.community.dto;

import java.util.ArrayList;
import java.util.List;

import lombok.Data;

@Data
public class PaginationDTO {
	
	private List<QuestionDTO> questions;
	private boolean showPrevious;
	private boolean showFirstPage;
	private boolean showNext;
	private boolean showEndPage;
	private Integer currentPage;
	private List<Integer> pages = new ArrayList<Integer>();
	private Integer totalPage;
	
	
	public void setPagination(Integer totalPage, Integer page) {
		this.totalPage = totalPage;
		currentPage = page;
		pages.add(page);
		for(int i = 1; i <= 3; i++) {
			if(page - i > 0) {
				pages.add(0, page - i);
			}
			if(page + i <= totalPage) {
				pages.add(page + i);
			}
		}
		
		//是否展示上一页
		if(page == 1) {
			showPrevious = false;
		}else {
			showPrevious = true;
		}
		//是否展示下一页
		if(page == totalPage) {
			showNext = false;
		}else {
			showNext = true;
		}
		//是否展示第一页
		if(pages.contains(1)) {
			showFirstPage = false;
		}else {
			showFirstPage = true;
		}
		//是否展示最后一页
		if(pages.contains(totalPage)) {
			showEndPage = false;
		}else {
			showEndPage = true;
		}
		
		
			
	}

}
